82 FR 48389 - Special Conditions: TTF Aerospace Inc., Boeing Model 767-300F Series Airplane; Installation of Main-Deck Crew-Rest Compartment

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 82, Issue 200 (October 18, 2017)

Page Range		48389-48394
FR Document		2017-22544

These special conditions are issued for the Boeing Model 767- 300F series airplane. This airplane, as modified by TTF Aerospace Inc., will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport- category airplanes. This design feature is a crew-rest compartment located in a Class E cargo compartment on the main deck of the airplane. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

Federal Register, Volume 82 Issue 200 (Wednesday, October 18, 2017)

[Federal Register Volume 82, Number 200 (Wednesday, October 18, 2017)]
[Rules and Regulations]
[Pages 48389-48394]
From the Federal Register Online [www.thefederalregister.org]
[FR Doc No: 2017-22544]

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Rules and Regulations
Federal Register
________________________________________________________________________

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having general applicability and legal effect, most of which are keyed
to and codified in the Code of Federal Regulations, which is published
under 50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by the Superintendent of Documents.

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Federal Register / Vol. 82, No. 200 / Wednesday, October 18, 2017 /
Rules and Regulations

[[Page 48389]]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 25

[Docket No. FAA-2016-0965; Special Conditions No. 25-702-SC]

Special Conditions: TTF Aerospace Inc., Boeing Model 767-300F
Series Airplane; Installation of Main-Deck Crew-Rest Compartment

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions; request for comments.

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SUMMARY: These special conditions are issued for the Boeing Model 767-
300F series airplane. This airplane, as modified by TTF Aerospace Inc.,
will have a novel or unusual design feature when compared to the state
of technology envisioned in the airworthiness standards for transport-
category airplanes. This design feature is a crew-rest compartment
located in a Class E cargo compartment on the main deck of the
airplane. The applicable airworthiness regulations do not contain
adequate or appropriate safety standards for this design feature. These
special conditions contain the additional safety standards that the
Administrator considers necessary to establish a level of safety
equivalent to that established by the existing airworthiness standards.

DATES: This action is effective on TTF Aerospace Inc. on October 18,
2017. Send your comments by December 4, 2017.

ADDRESSES: Send comments identified by docket number FAA-2017-0965
using any of the following methods:
Federal eRegulations Portal: Go to http://www.regulations.gov/ and follow the online instructions for sending
your comments electronically.
Mail: Send comments to Docket Operations, M-30, U.S.
Department of Transportation (DOT), 1200 New Jersey Avenue SE., Room
W12-140, West Building Ground Floor, Washington, DC 20590-0001.
Hand Delivery or Courier: Take comments to Docket
Operations in Room W12-140 of the West Building Ground Floor at 1200
New Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
Fax: Fax comments to Docket Operations at 202-493-2251.
Privacy: The FAA will post all comments it receives, without
change, to http://www.regulations.gov/, including any personal
information the commenter provides. Using the search function of the
docket Web site, anyone can find and read the electronic form of all
comments received into any FAA docket, including the name of the
individual sending the comment (or signing the comment for an
association, business, labor union, etc.). DOT's complete Privacy Act
Statement can be found in the Federal Register published on April 11,
2000 (65 FR 19477-19478).
Docket: Background documents or comments received may be read at
http://www.regulations.gov/ at any time. Follow the online instructions
for accessing the docket or go to Docket Operations in Room W12-140 of
the West Building Ground Floor at 1200 New Jersey Avenue SE.,
Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays.

FOR FURTHER INFORMATION CONTACT: John Shelden, FAA, Airframe and Cabin
Safety Section, AIR-675, Transport Standards Branch, Policy and
Innovation Division, Aircraft Certification Service, 1601 Lind Avenue
SW., Renton, Washington 98057-3356; telephone 425-227-2785; facsimile
425-227-1320.

SUPPLEMENTARY INFORMATION: The substance of these special conditions,
as applied to the installation of crew-rest modules in the upper and
lower lobes of the airplane, has been published in the Federal Register
for public comment in several prior instances. In the past decade,
comments were received in 2013 and 2014, but did not affect the
substance of these special conditions. Also, in 2015, the FAA approved
an exemption for a crew-rest module in a configuration very similar to
this proposal. That exemption received no public comment. Therefore,
the FAA finds it unnecessary to delay the effective date and that good
cause exists for making these special conditions effective upon
publication in the Federal Register.

Comments Invited

We invite interested people to take part in this rulemaking by
sending written comments, data, or views. The most helpful comments
reference a specific portion of the special conditions, explain the
reason for any recommended change, and include supporting data.
We will consider all comments we receive by the closing date for
comments. We may change these special conditions based on the comments
we receive.

Background

On September 28, 2016, TTF Aerospace Inc. applied for a
supplemental type certificate for the installation of a crew-rest
compartment on the main deck of Boeing Model 767-300F series airplanes.
The Boeing Model 767-300F series airplane is a transport-category,
wide-body freighter airplane with a maximum takeoff weight of
approximately 412,000 lbs.

Type Certification Basis

Under the provisions of title 14, Code of Federal Regulations (14
CFR) 21.101, TTF Aerospace Inc. must show that the Boeing Model 767-
300F series airplane, as changed, continues to meet the applicable
provisions of the regulations listed in Type Certificate No. A1NM or
the applicable regulations in effect on the date of application for the
change, except for earlier amendments as agreed upon by the FAA.
If the Administrator finds that the applicable airworthiness
regulations (i.e., 14 CFR part 25) do not contain adequate or
appropriate safety standards for the Boeing Model 767-300F series
airplane because of a novel or unusual design feature, special
conditions are prescribed under the provisions of Sec. 21.16.
Special conditions are initially applicable to the model for which
they are issued. Should the applicant apply for a supplemental type
certificate to modify any other model included on the same type
certificate, to incorporate the same novel or unusual design feature,
these special conditions would also apply to the other model under
Sec. 21.101.

[[Page 48390]]

In addition to the applicable airworthiness regulations and special
conditions, the Boeing Model 767-300F series airplane must comply with
the fuel-vent and exhaust-emission requirements of 14 CFR part 34, and
the noise-certification requirements of 14 CFR part 36.
The FAA issues special conditions, as defined in 14 CFR 11.19, in
accordance with Sec. 11.38, and they become part of the type
certification basis under Sec. 21.101.

Novel or Unusual Design Feature

The Boeing Model 767-300F series airplane, as modified by TTF
Aerospace Inc., will incorporate the following novel or unusual design
feature:
A crew-rest compartment installed in a Class E cargo compartment on
the airplane main deck.

Discussion

The crew-rest compartment will be located in what is currently the
Class E main-deck cargo compartment of Boeing Model 767-300F series
airplanes. It will be designed as a one-piece, self-contained unit for
installation in the forward portion of the cargo compartment. The crew-
rest compartment will be attached to the existing cargo-restraint
system, and will interface with the left-hand wall of the cargo
compartment with a seal that will surround the door that currently
provides passage to and from the cargo compartment. Crew-rest
compartment occupancy will be limited to a maximum of four occupants.
The crew-rest compartment will contain approved seats or berths,
able to withstand the maximum flight loads when occupied, for each
occupant permitted in the crew-rest compartment, and it will only be
occupied in flight, i.e., not during taxi, takeoff or landing. A smoke-
detection system, manual firefighting system, oxygen supply, and
occupant amenities will be provided in the crew-rest compartment. The
door will provide passage to and from the crew-rest compartment.
The FAA considers crew-rest compartment smoke- or fire-detection
and fire-suppression systems (including airflow management features,
which prevent hazardous quantities of smoke or fire-extinguishing agent
from entering any other compartment occupied by crewmembers or
passengers) complex in terms of paragraph 6d of Advisory Circular (AC)
25.1309-1A, ``System Design and Analysis.'' In addition, the FAA
considers failure of the crew-rest compartment fire-protection system
(i.e., smoke- or fire-detection and fire-suppression systems), in
conjunction with a crew-rest compartment fire, to be a catastrophic
event. Based on the ``Depth of Analysis Flowchart'' shown in Figure 2
of AC 25.1309-1A, the depth of analysis should include both qualitative
and quantitative assessments (reference paragraphs 8d, 9, and 10 of AC
25.1309-1A). In addition, it should be noted that flammable fluids, and
other dangerous cargo are prohibited from the crew-rest compartment.
The requirements in these special conditions are intended to enable
crewmembers quick entry to the crew-rest compartment to locate a fire
source, and also inherently place limits on the size of the crew-rest
area, as well as the amount of baggage that may be stored inside the
crew-rest compartment. Baggage in the crew-rest compartment must be
limited to the stowage of crew personal luggage, and the compartment
must not be used for the stowage of cargo or supernumerary baggage. The
design of a system that includes cargo or supernumerary baggage would
require additional requirements to ensure safe operation.
The addition of galley equipment, or a kitchenette incorporating a
heat source (e.g., cook tops, microwaves, coffee pots, etc.) other than
a conventional lavatory or kitchenette water heater, within the crew-
rest compartment, would also require additional special conditions, and
is prohibited until such conditions are approved. A water heater is
acceptable without the need for additional special conditions.
These special conditions contain the additional safety standards
that the Administrator considers necessary to establish a level of
safety equivalent to that established by the existing airworthiness
standards.

Applicability

As discussed above, these special conditions are applicable to the
Boeing Model 767-300F series airplane. Should TTF Aerospace Inc. apply
at a later date for a supplemental type certificate to modify any other
model included on Type Certificate No. A1NM to incorporate the same
novel or unusual design feature, these special conditions would apply
to that model as well.

Conclusion

This action affects only certain novel or unusual design features
on one model of airplane. It is not a rule of general applicability and
affects only the applicant who applied to the FAA for approval of this
feature on the airplane.

List of Subjects in 14 CFR Part 25

Aircraft, Aviation safety, Reporting and recordkeeping
requirements.

The authority citation for these special conditions is as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701, 44702, 44704.

The Special Conditions

Accordingly, pursuant to the authority delegated to me by the
Administrator, the following special conditions are issued as part of
the type certification basis for Boeing Model 767-300F series airplanes
modified by TTF Aerospace Inc. Special conditions 1a, 2b, 2c, and the
operating procedures, warnings, alarms and alerts listed below must be
added to the limitations section of the airplane flight manual.
(1) Occupancy of the crew-rest compartment is limited to the total
number of installed sleeping berths and seats in the compartment. Each
occupant permitted in the crew-rest compartment must be provided an
approved seat or berth able to withstand the maximum flight loads when
occupied. The maximum occupancy is four in the crew-rest compartment,
accounting for two sleeping berths and two seats.
(a) An appropriate placard must be displayed in a conspicuous place
at each entrance to the crew-rest compartment to indicate:
(i) The maximum number of occupants allowed;
(ii) That occupancy is restricted to crewmembers who are trained in
evacuation procedures for the crew-rest compartment;
(iii) That occupancy is prohibited during taxi, takeoff, and
landing;
(iv) That smoking is prohibited in the crew-rest compartment;
(v) That hazardous quantities of flammable fluids, or other
dangerous cargo are prohibited from the crew-rest compartment;
(vi) That stowage in the crew-rest compartment must be limited to
emergency equipment, airplane-supplied equipment (e.g., bedding), and
crew personal luggage; cargo and supernumerary baggage is not allowed.
(b) At least one ashtray must be located conspicuously on or near
the entry side of any entrance to the crew-rest compartment.
(c) If access to the remainder of the Class E cargo compartment is
required from the crew-rest compartment, doors must be designed to be
easily opened from both within and outside of the crew-rest
compartment. If a locking mechanism is installed, it must be capable of
being unlocked from the outside without the aid of special tools. The
lock must not prevent opening from the inside of the compartment at any
time.

[[Page 48391]]

(d) For all doors installed in the evacuation routes, they must be
designed such that they do not allow anyone to be trapped inside the
crew-rest compartment. If a locking mechanism is installed on an
evacuation-route door, it must be capable of being unlocked from the
outside without the aid of special tools. The lock must not prevent
opening the door from the inside of the crew-rest compartment at any
time.
(2) An emergency-evacuation route must be available for occupants
of the crew-rest compartment to rapidly evacuate to the flight deck/
supernumerary area. The crew-rest compartment access must be able to be
closed from the flight deck/supernumerary area after evacuation. In
addition--
(a) The route must be designed to minimize the possibility of
blockage that might result from fire, mechanical or structural failure,
or persons standing on top of or against the escape route. The use of
evacuation routes must not be dependent on any powered device. If an
evacuation route has low headroom, provisions must be made to prevent
or protect crew-rest compartment occupants from head injury.
(b) Emergency-evacuation procedures, including the emergency
evacuation of an incapacitated occupant from the crew-rest compartment,
must be established. All of these procedures must be transmitted to the
operators for incorporation into their training programs and
appropriate operational manuals.
(c) The airplane flight manual, or other suitable means, must
include a limitation requiring that crewmembers be trained in the use
of evacuation routes.
(3) A means must be provided for the evacuation of an incapacitated
person (representative of a 95th percentile male) from the crew-rest
compartment to the supernumerary compartment. The evacuation must be
demonstrated for all evacuation routes.
(4) The following signs and placards must be provided in the crew-
rest compartment:
(a) At least one exit sign, located near each exit, meeting the
requirements of Sec. 25.812(b)(1)(i) at Amendment 25-58, except that a
sign with reduced background area of no less than 5.3 square inches
(excluding the letters) may be utilized, provided that it is installed
such that the material surrounding the exit sign is light in color
(e.g., white, cream, light beige). If the material surrounding the exit
sign is not light in color, a sign with a minimum of a one-inch wide
background border around the letters would also be acceptable;
(b) An appropriate placard located near each exit defining the
location and the operating instructions for each evacuation route;
(c) Placards must be readable from a distance of 30 inches under
emergency lighting conditions; and
(d) The exit handles and evacuation-path operating-instruction
placards must be illuminated to at least 160 micro lamberts under
emergency lighting conditions.
(5) In the event of failure of the airplane's main power system, or
of the normal crew-rest compartment lighting system, emergency
illumination must automatically be provided for the crew-rest
compartment. In addition--
(a) This emergency illumination must be independent of the main
lighting system.
(b) The sources of general cabin illumination may be common to both
the emergency and the main lighting systems if the power supply to the
emergency lighting system is independent of the power supply to the
main lighting system.
(c) The illumination level must be sufficient for the occupants of
the crew-rest compartment to evacuate to the flight deck/supernumerary
area by means of each evacuation route.
(d) The illumination level must be sufficient, with the privacy
curtains in the closed position, for each occupant of the crew-rest
compartment to locate an oxygen mask.
(6) A means must be provided for two-way voice communications
between crewmembers on the flight deck and occupants of the crew-rest
compartment.
(7) A means must be provided for manual activation of an aural
emergency-alarm system, audible during normal and emergency conditions,
to enable occupants on the flight deck to alert occupants of the crew-
rest compartment of an emergency situation. Use of a public address or
crew interphone system is acceptable, provided an adequate means of
differentiating between normal and emergency communications is
incorporated. The system must maintain power in-flight for at least ten
minutes after the shutdown or failure of all engines and auxiliary
power units (APUs), or the disconnection or failure of all power
sources dependent on their continued operation of the engines and APUs.
(8) A readily detectable means must be provided, for seated or
standing occupants of the crew-rest compartment, that indicates when
seatbelts should be fastened. In the absence of seats, at least one
means must be provided to accommodate anticipated turbulence (e.g.,
sufficient handholds). Seatbelt-type restraints must be provided for
berths, and must be compatible with occupant sleeping attitude during
cruise conditions. A placard must be located on each berth, and require
that seatbelts be fastened when occupied. If compliance with any of the
other requirements of these special conditions is predicated on a berth
occupant's specific head location, a placard must identify the head
location.
(9) In lieu of the requirements specified in Sec. 25.1439(a) at
Amendment 25-38, that pertain to isolated compartments, and to provide
a level of safety equivalent to that which is provided to occupants of
a small, isolated galley, the following equipment must be provided in
the crew-rest compartment:
(a) At least one approved hand-held fire extinguisher, appropriate
for the kinds of fires likely to occur;
(b) Two protective-breathing equipment (PBE) devices, approved to
Technical Standard Order C116A or equivalent, suitable for
firefighting, or one PBE for each hand-held fire extinguisher,
whichever is greater; and
(c) One flashlight.

Note: Additional PBEs and fire extinguishers in specific
locations, beyond the minimum numbers prescribed in special
condition no. 9, may be required as a result of any egress analysis
accomplished to satisfy special condition 2(a).

(10) A smoke- or fire-detection system (or systems) must be
provided that monitors each occupiable area within the crew-rest
compartment, including those areas partitioned by curtains. Flight
tests must be conducted to show compliance with this requirement. Each
system (or systems) must provide:
(a) A visual indication to the flight deck within one minute after
the start of a fire;
(b) An aural warning in the crew-rest compartment; and
(c) A warning in the main supernumerary area. This warning must be
readily detectable by a supernumerary.
(11) The crew-rest compartment must be designed such that fires
within the compartment can be controlled without a crewmember having to
enter the compartment, or the design of the access provisions must
allow crewmembers equipped for firefighting to have unrestricted access
to the compartment. The time for a crewmember on the main deck to react
to the fire alarm, to don the

[[Page 48392]]

firefighting equipment, and to gain access must not exceed the time for
the compartment to become smoke-filled, making it difficult to locate
the fire source.
(12) A means must be provided to exclude hazardous quantities of
smoke or extinguishing agent, originating in the crew-rest compartment,
from entering any other occupiable compartment. A means must also be
provided to exclude hazardous quantities of smoke or extinguishing
agent originating in the Class E cargo compartment from entering the
crew-rest compartment. This means must include the time periods during
the evacuation of the crew-rest compartment and, if applicable, when
accessing the crew-rest compartment to manually fight a fire. Smoke
entering any other compartment occupied by crewmembers or
supernumeraries, when the access to the crew-rest compartment is opened
during an emergency evacuation, must dissipate within five minutes
after the access to the crew-rest compartment is closed. Hazardous
quantities of smoke may not enter any other compartment occupied by
supernumeraries or crewmembers during subsequent access to manually
fight a fire in the crew-rest compartment (the amount of smoke
entrained by a firefighter exiting the crew-rest compartment through
the access is not considered hazardous). During the 1-minute smoke
detection time, penetration of a small quantity of smoke from the crew-
rest compartment, into an occupied area, is acceptable. Flight tests
must be conducted to show compliance with this requirement. If a built-
in fire-extinguishing system is used in lieu of manual firefighting,
then the fire-extinguishing system must be designed so that no
hazardous quantities of extinguishing agent will enter other
compartments occupied by supernumeraries or crewmembers. The system
must have adequate capacity to suppress any fire occurring in the crew-
rest compartment, considering the fire threat, volume of the
compartment, and the ventilation rate.
(13) In lieu of providing a supplemental oxygen system in
accordance with Sec. 25.1447(c)(1), a portable oxygen unit, meeting
the requirements of special condition no. 14, must be immediately
available for occupants of each seat and berth in the crew-rest
compartment. An aural and visual warning must be provided to warn the
occupants of the crew-rest compartment to don oxygen masks in the event
of decompression. The warning must activate before the cabin pressure
altitude exceeds 15,000 feet. The aural warning must sound continuously
for a minimum of five minutes or until a reset push-button in the crew-
rest compartment is pressed for reset. Procedures for decompression
events must be established for crew-rest compartment occupants. These
procedures must be transmitted to the operator for incorporation into
their training programs and appropriate operational manuals.
(14) The portable oxygen unit must meet the performance
requirements of either Sec. 25.1443(a) or Sec. 25.1443(b), or the
equipment must be shown to protect the occupant from hypoxia at an
activity level required to return to his or her seat following a rapid
decompression to 25,000 feet cabin altitude. In addition, the portable
oxygen equipment must:
(a) Meet Sec. 25.1439(b)(1), (2), and (4), and
(b) be designed to prevent any inward leakage to the inside of the
mask, and
(c) prevent any outward leakage causing significant increase in the
oxygen content of the local atmosphere, and
(d) be sized adequately for continuous and uninterrupted use during
worst-case flight duration following decompression, or must be of
sufficient duration to allow the occupant to return to their seat,
where additional oxygen is readily accessible for the remainder of the
decompression event.
(15) If the airplane contains a destination area, such as a
crewmember changing area, a portable oxygen unit, meeting the
requirements of special condition no. 14, must be readily available for
each occupant who may reasonably be expected to be in the destination
area.
(a) An aural and visual warning must be provided to alert the
occupants of the crew-rest compartment to don oxygen masks in the event
of decompression or fire in the Class E cargo compartment, or in cases
in which a decompression and subsequent climb are required. The warning
must activate before the cabin pressure altitude exceeds 15,000 feet.
The aural warning must sound continuously for a minimum of five minutes
or until a reset push button in the crew-rest compartment is pressed
for reset.
(b) Procedures for decompression events must be established for
crew-rest compartment occupants. These procedures must be transmitted
to the operator for incorporation into their training programs and
appropriate operational manuals. These procedures must be transmitted
to the operator for incorporation into their training programs and
appropriate operational manuals. In addition, a decompression panel
must be incorporated into the crew-rest compartment construction.
(16) The following requirements apply to crew-rest compartments
that are divided into sections by the installation of curtains or
partitions:
(a) To accommodate sleeping occupants, an aural alert must be
available that can be heard in each section of the crew-rest
compartment. A visual indicator that occupants must don an oxygen mask
is required in each section where seats or berths are installed. A
minimum of one portable oxygen unit, meeting the requirements of
special condition no. 14, is required for each seat or berth.
(b) A placard is required, adjacent each curtain that visually
divides or separates, for privacy purposes, the crew-rest compartment
into sections. The placard must require that the curtains remain open
when the sections they create are unoccupied.
(c) For each crew-rest compartment section created by the
installation of a curtain, the following requirements must be met with
the curtain open or closed:
(i) Emergency illumination (special condition no. 5);
(ii) Emergency alarm system (special condition no. 7);
(iii) Fasten-seatbelt signal, or return-to-seat signal, as
applicable (special condition no. 8); and
(iv) A smoke- or fire-detection system (special condition no. 10).
(d) Compartments visually divided, to the extent that evacuation
could be affected, must have exit signs that direct occupants to the
primary exit. The exit signs must be provided in each separate section
of the crew-rest compartment, and must meet the requirements of Sec.
25.812(b)(1)(i) at Amendment 25-58. An exit sign with reduced
background area, as described in special condition no. 4(a), may be
used to meet this requirement.
(e) For sections within a crew-rest compartment that are created by
the installation of a partition with a door separating the sections,
the following requirements must be met with the door open or closed:
(i) It must be shown that any door between the sections has been
designed to preclude anyone from being trapped inside the compartment.
Removal of an incapacitated occupant from within this area must be
considered. A secondary evacuation route from a small room, such as a
changing area or lavatory designed for only one occupant for short
duration, is not required. However, removal of an incapacitated
occupant from within this area must be considered.

[[Page 48393]]

(ii) Each section must contain exit signs that meet the
requirements of Sec. 25.812(b)(1)(i) at Amendment 25-58, directing
occupants to the primary exit. An exit sign with reduced background
area, as described in special condition no. 4(a), may be used to meet
this requirement.
(iii) Special condition nos. 5 (emergency illumination), 7
(emergency alarm system), 8 (fasten-seatbelt signal, or return-to-seat
signal, as applicable), and 10 (smoke- or fire-detection system) must
be met with the door open or closed.
(iv) Special condition nos. 6 (two-way voice communication) and 9
(emergency firefighting and protective equipment) must be met
independently for each separate section, except for lavatories or other
small areas that are not intended to be occupied for extended duration.
(17) Where a waste-disposal receptacle is installed, it must be
equipped with a built-in fire extinguisher designed to discharge
automatically upon occurrence of a fire in the receptacle.
(18) Materials, including finishes or decorative surfaces applied
to the materials, must comply with the flammability requirements of
Sec. 25.853 as amended by Amendment 25-116 or later. Seat cushions and
mattresses must comply with the flammability requirements of Sec.
25.853(c) as amended by Amendment 25-116 or later, and the test
requirements of part 25, appendix F, part II, or other equivalent
methods.
(19) When a crew-rest compartment is installed or enclosed as a
removable module in part of a cargo compartment, or is located directly
adjacent to a cargo compartment without an intervening cargo
compartment wall, the following applies:
(a) Any wall of the module (container) forming part of the boundary
of the reduced cargo compartment, subject to direct flame impingement
from a fire in the cargo compartment and including any interface item
between the module (container) and the airplane structure or systems,
must meet the applicable requirements of Sec. 25.855 at Amendment 25-
60.
(b) Means must be provided so that the fire-protection level of the
cargo compartment meets the applicable requirements of Sec. 25.855 at
Amendment 25-60, Sec. 25.857 at Amendment 25-60, and Sec. 25.858 at
Amendment 25-54 when the module (container) is not installed.
(c) Use of an emergency-evacuation route must not require occupants
of the crew-rest compartment to enter the cargo compartment as a means
by which to return to the flight deck/supernumerary area.
(d) The aural warning in special condition no. 7 must sound in the
crew-rest compartment in the event of a fire in the cargo compartment.
(20) All enclosed stowage compartments within the crew-rest
compartment that are not limited to stowage of emergency equipment or
airplane-supplied equipment (e.g., bedding) must meet the design
criteria provided in the table below. As indicated in the table, these
special conditions do not address enclosed stowage compartments greater
than 200 ft\3\ in interior volume. The in-flight accessibility of very
large, enclosed stowage compartments, and the subsequent impact on
crewmembers' ability to effectively reach any part of the compartment
with the contents of a hand-held fire extinguisher, requires additional
fire-protection considerations similar to those required for
inaccessible compartments such as Class C cargo compartments.

Stowage Compartment Interior Volumes
----------------------------------------------------------------------------------------------------------------
Fire protection features Less than 25 ft\3\ 25 ft\3\ to 57 ft\3\ 57 ft\3\ to 200 ft\3\
----------------------------------------------------------------------------------------------------------------
Materials of Construction \1\..... Yes.................. Yes.................. Yes.
Detectors \2\..................... No................... Yes.................. Yes
Liner \3\......................... No................... No................... Yes.
Locating Device \4\............... No................... Yes.................. Yes.
----------------------------------------------------------------------------------------------------------------
\1\ Compliant Materials of Construction: The material used in constructing each enclosed stowage compartment
must at least be fire resistant and must meet the flammability standards established for interior components
(i.e., 14 CFR part 25 Appendix F, Parts I, IV, and V) per the requirements of Sec. 25.853. For compartments
less than 25 ft.\3\ in interior volume, the design must ensure the ability to contain a fire likely to occur
within the compartment under normal use.
\2\ Smoke or Fire Detectors: Enclosed stowage compartments equal to or exceeding 25 ft\3\ in interior volume
must be provided with a smoke- or fire-detection system to ensure that a fire can be detected within a one-
minute detection time. Flight tests must be conducted to show compliance with this requirement. Each system
(or systems) must provide:
(a) A visual indication in the flight deck within one minute after the start of a fire;
(b) An aural warning in the crew-rest compartment; and
(c) A warning in the supernumerary seating area.
\3\ Liner: If it can be shown that the material used to construct the stowage compartment meets the flammability
requirements of a liner for a Class B cargo compartment, then no liner would be required for enclosed stowage
compartments equal to or greater than 25 ft\3\ in interior volume but less than 57 ft\3\ in interior volume.
For all enclosed stowage compartments equal to or greater than 57 ft\3\ in interior volume but less than or
equal to 200 ft\3\, a liner must be provided that meets the requirements of Sec. 25.855 at Amendment 25-60
for a Class B cargo compartment.
\4\ Fire-Location Detector: Crew-rest compartments that contain enclosed stowage compartments exceeding 25 ft\3\
interior volume and which are located away from one central location, such as the entry to the crew-rest
compartment or a common area within the crew-rest compartment, would require additional fire-protection
features or related devices to assist a firefighter in determining the location of a fire.

[[Page 48394]]

Issued in Renton, Washington, on October 12, 2017.
Victor Wicklund,
Manager, Transport Standards Branch, Policy and Innovation Division,
Aircraft Certification Service.
[FR Doc. 2017-22544 Filed 10-17-17; 8:45 am]
BILLING CODE 4910-13-P

48390 Federal Register / Vol. 82, No. 200 / Wednesday, October 18, 2017 / Rules and Regulations

In addition to the applicable with a crew-rest compartment fire, to be The authority citation for these
airworthiness regulations and special a catastrophic event. Based on the special conditions is as follows:
conditions, the Boeing Model 767–300F ‘‘Depth of Analysis Flowchart’’ shown Authority: 49 U.S.C. 106(g), 40113, 44701,
series airplane must comply with the in Figure 2 of AC 25.1309–1A, the depth 44702, 44704.
fuel-vent and exhaust-emission of analysis should include both
requirements of 14 CFR part 34, and the qualitative and quantitative assessments The Special Conditions
noise-certification requirements of 14 (reference paragraphs 8d, 9, and 10 of Accordingly, pursuant to the
CFR part 36. AC 25.1309–1A). In addition, it should authority delegated to me by the
The FAA issues special conditions, as be noted that flammable fluids, and Administrator, the following special
defined in 14 CFR 11.19, in accordance other dangerous cargo are prohibited conditions are issued as part of the type
with § 11.38, and they become part of from the crew-rest compartment. certification basis for Boeing Model
the type certification basis under The requirements in these special 767–300F series airplanes modified by
§ 21.101. conditions are intended to enable TTF Aerospace Inc. Special conditions
Novel or Unusual Design Feature crewmembers quick entry to the crew- 1a, 2b, 2c, and the operating procedures,
rest compartment to locate a fire source, warnings, alarms and alerts listed below
The Boeing Model 767–300F series and also inherently place limits on the must be added to the limitations section
airplane, as modified by TTF Aerospace size of the crew-rest area, as well as the of the airplane flight manual.
Inc., will incorporate the following amount of baggage that may be stored (1) Occupancy of the crew-rest
novel or unusual design feature: inside the crew-rest compartment. compartment is limited to the total
A crew-rest compartment installed in Baggage in the crew-rest compartment number of installed sleeping berths and
a Class E cargo compartment on the must be limited to the stowage of crew seats in the compartment. Each
airplane main deck. personal luggage, and the compartment occupant permitted in the crew-rest
Discussion must not be used for the stowage of compartment must be provided an
The crew-rest compartment will be cargo or supernumerary baggage. The approved seat or berth able to withstand
located in what is currently the Class E design of a system that includes cargo the maximum flight loads when
main-deck cargo compartment of Boeing or supernumerary baggage would occupied. The maximum occupancy is
Model 767–300F series airplanes. It will require additional requirements to four in the crew-rest compartment,
be designed as a one-piece, self- ensure safe operation. accounting for two sleeping berths and
The addition of galley equipment, or two seats.
contained unit for installation in the
a kitchenette incorporating a heat source (a) An appropriate placard must be
forward portion of the cargo
(e.g., cook tops, microwaves, coffee pots, displayed in a conspicuous place at
compartment. The crew-rest
etc.) other than a conventional lavatory each entrance to the crew-rest
compartment will be attached to the
or kitchenette water heater, within the compartment to indicate:
existing cargo-restraint system, and will (i) The maximum number of
crew-rest compartment, would also
interface with the left-hand wall of the occupants allowed;
require additional special conditions,
cargo compartment with a seal that will (ii) That occupancy is restricted to
and is prohibited until such conditions
surround the door that currently crewmembers who are trained in
are approved. A water heater is
provides passage to and from the cargo evacuation procedures for the crew-rest
acceptable without the need for
compartment. Crew-rest compartment compartment;
additional special conditions.
occupancy will be limited to a These special conditions contain the (iii) That occupancy is prohibited
maximum of four occupants. additional safety standards that the during taxi, takeoff, and landing;
The crew-rest compartment will (iv) That smoking is prohibited in the
Administrator considers necessary to
contain approved seats or berths, able to crew-rest compartment;
establish a level of safety equivalent to
withstand the maximum flight loads (v) That hazardous quantities of
that established by the existing
when occupied, for each occupant flammable fluids, or other dangerous
airworthiness standards.
permitted in the crew-rest compartment, cargo are prohibited from the crew-rest
and it will only be occupied in flight, Applicability compartment;
i.e., not during taxi, takeoff or landing. As discussed above, these special (vi) That stowage in the crew-rest
A smoke-detection system, manual conditions are applicable to the Boeing compartment must be limited to
firefighting system, oxygen supply, and Model 767–300F series airplane. Should emergency equipment, airplane-
occupant amenities will be provided in TTF Aerospace Inc. apply at a later date supplied equipment (e.g., bedding), and
the crew-rest compartment. The door for a supplemental type certificate to crew personal luggage; cargo and
will provide passage to and from the modify any other model included on supernumerary baggage is not allowed.
crew-rest compartment. Type Certificate No. A1NM to (b) At least one ashtray must be
The FAA considers crew-rest incorporate the same novel or unusual located conspicuously on or near the
compartment smoke- or fire-detection design feature, these special conditions entry side of any entrance to the crew-
and fire-suppression systems (including would apply to that model as well. rest compartment.
airflow management features, which (c) If access to the remainder of the
prevent hazardous quantities of smoke Conclusion Class E cargo compartment is required
or fire-extinguishing agent from entering This action affects only certain novel from the crew-rest compartment, doors
any other compartment occupied by or unusual design features on one model must be designed to be easily opened
crewmembers or passengers) complex in of airplane. It is not a rule of general from both within and outside of the
terms of paragraph 6d of Advisory crew-rest compartment. If a locking
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applicability and affects only the
Circular (AC) 25.1309–1A, ‘‘System applicant who applied to the FAA for mechanism is installed, it must be
Design and Analysis.’’ In addition, the approval of this feature on the airplane. capable of being unlocked from the
FAA considers failure of the crew-rest outside without the aid of special tools.
compartment fire-protection system List of Subjects in 14 CFR Part 25 The lock must not prevent opening from
(i.e., smoke- or fire-detection and fire- Aircraft, Aviation safety, Reporting the inside of the compartment at any
suppression systems), in conjunction and recordkeeping requirements. time.

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(d) For all doors installed in the background border around the letters seatbelts should be fastened. In the
evacuation routes, they must be would also be acceptable; absence of seats, at least one means
designed such that they do not allow (b) An appropriate placard located must be provided to accommodate
anyone to be trapped inside the crew- near each exit defining the location and anticipated turbulence (e.g., sufficient
rest compartment. If a locking the operating instructions for each handholds). Seatbelt-type restraints
mechanism is installed on an evacuation route; must be provided for berths, and must
evacuation-route door, it must be (c) Placards must be readable from a be compatible with occupant sleeping
capable of being unlocked from the distance of 30 inches under emergency attitude during cruise conditions. A
outside without the aid of special tools. lighting conditions; and placard must be located on each berth,
The lock must not prevent opening the (d) The exit handles and evacuation- and require that seatbelts be fastened
door from the inside of the crew-rest path operating-instruction placards when occupied. If compliance with any
compartment at any time. must be illuminated to at least 160 of the other requirements of these
(2) An emergency-evacuation route micro lamberts under emergency special conditions is predicated on a
must be available for occupants of the lighting conditions. berth occupant’s specific head location,
crew-rest compartment to rapidly (5) In the event of failure of the a placard must identify the head
evacuate to the flight deck/ airplane’s main power system, or of the location.
supernumerary area. The crew-rest normal crew-rest compartment lighting (9) In lieu of the requirements
compartment access must be able to be system, emergency illumination must specified in § 25.1439(a) at Amendment
closed from the flight deck/ automatically be provided for the crew- 25–38, that pertain to isolated
supernumerary area after evacuation. In rest compartment. In addition— compartments, and to provide a level of
addition— (a) This emergency illumination must safety equivalent to that which is
(a) The route must be designed to be independent of the main lighting provided to occupants of a small,
minimize the possibility of blockage system. isolated galley, the following equipment
that might result from fire, mechanical (b) The sources of general cabin must be provided in the crew-rest
or structural failure, or persons standing illumination may be common to both compartment:
on top of or against the escape route. the emergency and the main lighting (a) At least one approved hand-held
The use of evacuation routes must not systems if the power supply to the fire extinguisher, appropriate for the
be dependent on any powered device. If emergency lighting system is kinds of fires likely to occur;
an evacuation route has low headroom, independent of the power supply to the (b) Two protective-breathing
provisions must be made to prevent or main lighting system. equipment (PBE) devices, approved to
protect crew-rest compartment (c) The illumination level must be
Technical Standard Order C116A or
occupants from head injury. sufficient for the occupants of the crew-
equivalent, suitable for firefighting, or
(b) Emergency-evacuation procedures, rest compartment to evacuate to the
one PBE for each hand-held fire
including the emergency evacuation of flight deck/supernumerary area by
extinguisher, whichever is greater; and
an incapacitated occupant from the means of each evacuation route.
(d) The illumination level must be (c) One flashlight.
crew-rest compartment, must be
established. All of these procedures sufficient, with the privacy curtains in Note: Additional PBEs and fire
must be transmitted to the operators for the closed position, for each occupant of extinguishers in specific locations, beyond
the crew-rest compartment to locate an the minimum numbers prescribed in special
incorporation into their training
oxygen mask. condition no. 9, may be required as a result
programs and appropriate operational of any egress analysis accomplished to satisfy
manuals. (6) A means must be provided for
special condition 2(a).
(c) The airplane flight manual, or two-way voice communications
other suitable means, must include a between crewmembers on the flight (10) A smoke- or fire-detection system
limitation requiring that crewmembers deck and occupants of the crew-rest (or systems) must be provided that
be trained in the use of evacuation compartment. monitors each occupiable area within
routes. (7) A means must be provided for the crew-rest compartment, including
(3) A means must be provided for the manual activation of an aural those areas partitioned by curtains.
evacuation of an incapacitated person emergency-alarm system, audible during Flight tests must be conducted to show
(representative of a 95th percentile normal and emergency conditions, to compliance with this requirement. Each
male) from the crew-rest compartment enable occupants on the flight deck to system (or systems) must provide:
to the supernumerary compartment. The alert occupants of the crew-rest (a) A visual indication to the flight
evacuation must be demonstrated for all compartment of an emergency situation. deck within one minute after the start of
evacuation routes. Use of a public address or crew a fire;
(4) The following signs and placards interphone system is acceptable, (b) An aural warning in the crew-rest
must be provided in the crew-rest provided an adequate means of compartment; and
compartment: differentiating between normal and (c) A warning in the main
(a) At least one exit sign, located near emergency communications is supernumerary area. This warning must
each exit, meeting the requirements of incorporated. The system must maintain be readily detectable by a
§ 25.812(b)(1)(i) at Amendment 25–58, power in-flight for at least ten minutes supernumerary.
except that a sign with reduced after the shutdown or failure of all (11) The crew-rest compartment must
background area of no less than 5.3 engines and auxiliary power units be designed such that fires within the
square inches (excluding the letters) (APUs), or the disconnection or failure compartment can be controlled without
may be utilized, provided that it is a crewmember having to enter the
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of all power sources dependent on their
installed such that the material continued operation of the engines and compartment, or the design of the access
surrounding the exit sign is light in APUs. provisions must allow crewmembers
color (e.g., white, cream, light beige). If (8) A readily detectable means must equipped for firefighting to have
the material surrounding the exit sign is be provided, for seated or standing unrestricted access to the compartment.
not light in color, a sign with a occupants of the crew-rest The time for a crewmember on the main
minimum of a one-inch wide compartment, that indicates when deck to react to the fire alarm, to don the

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Federal Register / Vol. 82, No. 200 / Wednesday, October 18, 2017 / Rules and Regulations 48393

(ii) Each section must contain exit amended by Amendment 25–116 or (c) Use of an emergency-evacuation
signs that meet the requirements of later. Seat cushions and mattresses must route must not require occupants of the
§ 25.812(b)(1)(i) at Amendment 25–58, comply with the flammability crew-rest compartment to enter the
directing occupants to the primary exit. requirements of § 25.853(c) as amended cargo compartment as a means by which
An exit sign with reduced background by Amendment 25–116 or later, and the to return to the flight deck/
area, as described in special condition test requirements of part 25, appendix F, supernumerary area.
no. 4(a), may be used to meet this part II, or other equivalent methods.
(d) The aural warning in special
requirement. (19) When a crew-rest compartment is
condition no. 7 must sound in the crew-
(iii) Special condition nos. 5 installed or enclosed as a removable
rest compartment in the event of a fire
(emergency illumination), 7 (emergency module in part of a cargo compartment,
in the cargo compartment.
alarm system), 8 (fasten-seatbelt signal, or is located directly adjacent to a cargo
or return-to-seat signal, as applicable), compartment without an intervening (20) All enclosed stowage
and 10 (smoke- or fire-detection system) cargo compartment wall, the following compartments within the crew-rest
must be met with the door open or applies: compartment that are not limited to
closed. (a) Any wall of the module (container) stowage of emergency equipment or
(iv) Special condition nos. 6 (two-way forming part of the boundary of the airplane-supplied equipment (e.g.,
voice communication) and 9 (emergency reduced cargo compartment, subject to bedding) must meet the design criteria
firefighting and protective equipment) direct flame impingement from a fire in provided in the table below. As
must be met independently for each the cargo compartment and including indicated in the table, these special
separate section, except for lavatories or any interface item between the module conditions do not address enclosed
other small areas that are not intended (container) and the airplane structure or stowage compartments greater than 200
to be occupied for extended duration. systems, must meet the applicable ft3 in interior volume. The in-flight
(17) Where a waste-disposal requirements of § 25.855 at Amendment accessibility of very large, enclosed
receptacle is installed, it must be 25–60. stowage compartments, and the
equipped with a built-in fire (b) Means must be provided so that subsequent impact on crewmembers’
extinguisher designed to discharge the fire-protection level of the cargo ability to effectively reach any part of
automatically upon occurrence of a fire compartment meets the applicable the compartment with the contents of a
in the receptacle. requirements of § 25.855 at Amendment hand-held fire extinguisher, requires
(18) Materials, including finishes or 25–60, § 25.857 at Amendment 25–60, additional fire-protection considerations
decorative surfaces applied to the and § 25.858 at Amendment 25–54 similar to those required for inaccessible
materials, must comply with the when the module (container) is not compartments such as Class C cargo
flammability requirements of § 25.853 as installed. compartments.

STOWAGE COMPARTMENT INTERIOR VOLUMES
Fire protection features Less than 25 ft3 25 ft3 to 57 ft3 57 ft3 to 200 ft3

Materials of Construction 1 ................................................... Yes ........................................ Yes ........................................ Yes.
Detectors 2 ............................................................................ No ......................................... Yes ........................................ Yes
Liner 3 ................................................................................... No ......................................... No ......................................... Yes.
Locating Device 4 ................................................................. No ......................................... Yes ........................................ Yes.
1 Compliant Materials of Construction: The material used in constructing each enclosed stowage compartment must at least be fire resistant
and must meet the flammability standards established for interior components (i.e., 14 CFR part 25 Appendix F, Parts I, IV, and V) per the re-
quirements of § 25.853. For compartments less than 25 ft.3 in interior volume, the design must ensure the ability to contain a fire likely to occur
within the compartment under normal use.
2 Smoke or Fire Detectors: Enclosed stowage compartments equal to or exceeding 25 ft3 in interior volume must be provided with a smoke- or
fire-detection system to ensure that a fire can be detected within a one-minute detection time. Flight tests must be conducted to show compli-
ance with this requirement. Each system (or systems) must provide:
(a) A visual indication in the flight deck within one minute after the start of a fire;
(b) An aural warning in the crew-rest compartment; and
(c) A warning in the supernumerary seating area.
3 Liner: If it can be shown that the material used to construct the stowage compartment meets the flammability requirements of a liner for a
Class B cargo compartment, then no liner would be required for enclosed stowage compartments equal to or greater than 25 ft3 in interior vol-
ume but less than 57 ft3 in interior volume. For all enclosed stowage compartments equal to or greater than 57 ft3 in interior volume but less than
or equal to 200 ft3, a liner must be provided that meets the requirements of § 25.855 at Amendment 25–60 for a Class B cargo compartment.
4 Fire-Location Detector: Crew-rest compartments that contain enclosed stowage compartments exceeding 25 ft3 interior volume and which are
located away from one central location, such as the entry to the crew-rest compartment or a common area within the crew-rest compartment,
would require additional fire-protection features or related devices to assist a firefighter in determining the location of a fire.
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Document Created: 2017-10-18 01:38:05
Document Modified: 2017-10-18 01:38:05

Category		Regulatory Information
Collection		Federal Register
sudoc Class		AE 2.7: GS 4.107: AE 2.106:
Publisher		Office of the Federal Register, National Archives and Records Administration
Section		Rules and Regulations
Action		Final special conditions; request for comments.
Dates		This action is effective on TTF Aerospace Inc. on October 18, 2017. Send your comments by December 4, 2017.
Contact		John Shelden, FAA, Airframe and Cabin Safety Section, AIR-675, Transport Standards Branch, Policy and Innovation Division, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone 425-227-2785; facsimile 425-227-1320.
FR Citation		82 FR 48389
CFR Associated		Aircraft; Aviation Safety and Reporting and Recordkeeping Requirements

82 FR 48389 - Special Conditions: TTF Aerospace Inc., Boeing Model 767-300F Series Airplane; Installation of Main-Deck Crew-Rest Compartment

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 82, Issue 200 (October 18, 2017)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration